The fate of quasiparticles in the superconducting state

Quasiparticle properties in the superconducting state are masked by the superfluid and are not directly accessible to infrared spectroscopy. We show how one can use a Kramers--Kronig transformation to separate the quasiparticle from superfluid response and extract intrinsic quasiparticle properties in the superconducting state. We also address the issue of a narrow quasiparticle peak observed in microwave measurements, and demonstrate how it can be combined with infrared measurements to obtain unified picture of electrodynamic properties of cuprate superconductors

Studies of vector boson production at CMS

The most recent diboson production and electroweak physics results from CMS are presented. This overview is focused on the precise measurement of WW, WZ, ZZ and γγ production, as well as W or Z production in association with a photon. These results are interpreted in terms of constraints on anomalous triple gauge couplings, while the study of WWγ and WZγ production is used to set limits on anomalous quartic gauge couplings. Selection of the latest electroweak results is also presented

A classical approach to the traditional sound of Serbia as captured during the time of former Yugoslavia

This independent study serves as an introduction of the Serbian folk music from the time of former Yugoslavia to classical musicians unfamiliar with its style. It provides research about its characteristics, heritage, and development, as well as the introduction to a few of many folk songs popular to this day. Furthermore, it offers arrangements and an explanation of the arranging process from the perspective of a classical music performer, which can serve as an inspiration and guide to other musicians interested in arranging music, as well as different styles of music

Visualizing and Understanding Tectonism and Volcanism on Earth and Other Terrestrial Bodies

This dissertation presents new methods of visualizing, teaching, assessing, modeling, and understanding tectonics on Earth and other celestial bodies. Tectonics is the study of planetary lithospheres and includes impact, plate, plume, cryo- and gravitational mechanisms. This dissertation is concerned with plate tectonics and plate/mantle plume interactions. Plate tectonics describes the mainly horizontal motion of lithospheric plates over the asthenosphere. Lithosphere is created at ridges and consumed at subduction zones. In addition to the plate tectonic system, mantle plumes also contribute to mass motions in the subsurface Earth. Both plate tectonics and plume upwelling processes help shape the present form of the planetary surface, including long volcanic island chains, deep ocean basins, and plate boundary triple junctions. Better understanding of these processes by visualization and numerical modeling is one of the primary goals of this study. In the geospatial analysis lab at ODU, our research methodology starts with the creation of visualizations for teaching. These include Google Earth-based virtual field explorations enhanced with digitized specimens and emergent geological and geophysical cross sections. We test these in classes with IRB compliance and sometimes this leads to the discovery of tectonic research questions which we then explore. Settings studied in this investigation are Tonga Trench in the western Pacific Ocean, Artemis on Venus, the Hawaiian-Emperor seamount chain, and the Azores triple junction. Some of these cases pose specific geophysical problems that were selected for further study. The Tonga Trench is a subduction zone that includes trench rollback and opening of a marginal basin—the Lau Basin. The rollback process is difficult to imagine, and therefore we created a set of instructional resources using COLLADA models and the Google Earth Application Programming Interface (API). Animated models for the assessments tests and exploration of different initiations of the subduction process led to a new alternative hypothesis for rollback. Virtual field explorations required the development of new interface features for the Google Earth API. All these instructional materials were combined into modular multi-user virtual field trip experiences and were subject to IRB-compliant evaluation of learning outcomes. Animated COLLADA models for the Hawaii Islands and Emperor Seamounts helped explain the origin and time progression of the island chain. From seismic data, a three-dimensional reconstruction of the Hawaiian mantle plume was created raising the question of the horizontal advection of the plume conduit in the mantle and its correlation with the change in trend of the islands. The Hawaiian–Emperor chain on Earth is spread out as the Pacific plate is moving over the Hawaiian mantle plume. On Venus, however, the Artemis structure was able to grow to super-plume size due to the absence of plate motion. For Venus, visualization was done on a much larger scale, including cross sections of the whole plate showing large plume structures, and Magellan SARS imagery of surface features. In the Azores triple junction, dispersion of plume material is influenced by plate boundary geometry, creating anomalies in seafloor geophysical data for several hundred kilometers away from the plume center. To explore the interaction between a mantle plume and a plate boundary triple junction, a series of three dimensional finite element numerical models was calculated. A parameter space investigation changed the location of the plume conduit and its volume flux, as well as the treatment of viscosity. Flow patterns, dynamical topography, relative crustal thickness variations and waist width scaling relationships resulting from these calculations give valuable insight into the importance of triple junction configuration in the dispersion of plume material

Identifying Fake News from the Variables that Governs the Spread of Fake News

Several researchers have attempted to investigate the processes that govern and support the spread of fake news. This paper collates and identifies these variables. This paper then categorises these variables based on three key players that are involved in the process: Users, Content, and Social Networks. The authors conducted an extensive review of the literature and a reflection on the key variables that are involved in the process. The paper has identified a total of twenty-seven variables. Then the paper presents a series of tasks to mitigate or eliminate these variables in a holistic process that could be automated to reduce or eliminate fake news propagation. Finally, the paper suggests further research into testing the method in lab conditions

The optimization of banking regulation intensity from the perspective of financial stability in banking sector: an empirical analysis

This paper investigates a multifactorial model, which allows defining an optimum level of banking regulation intensity based on the provision of a financial stability (at the macrolevel) and financial stability of banks (at the microlevel). An aggregated index of banking regulation intensity as well as an integrated index of financial stability of banks, which were the main factorial and resultative characteristic features during investigations, was formed for carrying-out of an empirical analysis. The optimum level of intensity of banking regulation has been suggested to define as the extremum of function of integrated index of financial stability of banks (determined by the method of the uniform optimality) on the relevant influencing factors (method of principal components)

Facebook Fake Profile Identification: Technical and Ethical Considerations

March 2019, Facebook updated its security procedures requesting ID verification for people who wish to advertise or promote political posts of adverts. The announcement received little media coverage even though it is an interesting development in the battle against Fake News. This paper reviews the current literature on different approaches in the battle against the spread of fake news, including the use of computer algorithms, A.I, and introduction of ID checks. Critical to the evaluation is consideration into ID checks as a means to combat the spread of Fake News. To understand the process and how it works, the team undertook a social experiment combined with reflective analysis to better understand the impact of ID check policies when combined with other standards policies of a typical platform. The analysis identifies grave concerns. In a wider context, standardising such policy will leave political activists in countries vulnerable to reprisal from authoritarian regimes. Other impacts include people who use fake names to protect the identity of adopted children or to protect anonymity from abusive partners. The analysis also points to the fact that troll arms could bypass these checks rendering the use of ID checks less effective in the battle to combat fake news. The analysis also points to the fact that troll arms could bypass these checks rendering the use of ID checks less effective in the battle to combat fake news